The Impact of AGN Feedback in Galaxy Groups

Details The Impact of AGN Feedback in Galaxy Groups The Impact of AGN Feedback in Galaxy Groups

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1201..225r&link_type=abstract

THE MONSTER'S FIERY BREATH: FEEDBACK IN GALAXIES, GROUPS, AND CLUSTERS. AIP Conference Proceedings, Volume 1201, pp. 225-228 (2

Computer Science

Clusters Of Galaxies, Galactic Nuclei, Interstellar Matter, Brightness, Galaxy Clusters, Galactic Nuclei, Circumnuclear Matter, And Bulges, Interstellar Dust Grains, Diffuse Emission, Infrared Cirrus, Magnitudes And Colors, Luminosities

Scientific paper

We demonstrate how X-ray measurements of the amount and distribution of gas and metals in the intracluster medium (ICM) of galaxy groups and clusters can probe the impact and feedback history of active galactic nuclei (AGN) in the cluster members. Comparing such measurements for a sample of groups to existing results for more massive clusters and to the optical and radio properties of the group members, we explore the role and efficiency of AGN in central group galaxies in (pre)-heating, mixing, and ejecting material from group-sized halos. AGN feedback appears to be important for mixing ICM metals in the cores of groups and low-mass clusters at the present day. At higher redshift, AGN outflows have plausibly also played a vital role in establishing the observed shortfall of gas and metals in groups compared to massive clusters.

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